ratpoints-debug: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/ratpoints-debug - from package: ratpoints

You may install the required package with command apt-get install {package}

Error in other languages:
ratpoints-debug: bevel nie gevind nie
ratpoints-debug: comandă negăsită
ratpoints-debug: comando não encontrado
ratpoints-debug: commande introuvable
ratpoints-debug: command not found
ratpoints-debug: käsku ei ole
ratpoints-debug: không tìm thấy lệnh
ratpoints-debug: komanda nerasta
ratpoints-debug: Kommando nicht gefunden.
ratpoints-debug: kommandot finns inte
ratpoints-debug: komut yok
ratpoints-debug: nie znaleziono polecenia
ratpoints-debug: níor aimsíodh an t-ordú
ratpoints-debug: no se encontró la orden
ratpoints-debug: no s'ha trobat l'ordre
ratpoints-debug: opdracht niet gevonden
ratpoints-debug: parancs nem található
ratpoints-debug: perintah tidak ditemukan
ratpoints-debug: príkaz nenájdený
ratpoints-debug: příkaz nenalezen
ratpoints-debug: команда не найдена
ratpoints-debug: командата не е открита
ratpoints-debug: 命令找不到
ratpoints-debug: コマンドが見つかりません